ace 5 2 0 d ual 300ma high psrr linear regulator ver 1. 4 1 d escription ace5 2 0 dual, low - noise, low - dropout regulator delivers at least 300 ma of continuous output current. the output voltage for each regulator is set independently by trimming. output voltages are selectable in 100mv steps within a range of 1.2v to 3.5 v. typical output noise is 47 uv rms ,and psrr is 73 db at 100 hz. the ace 520 includes two independent logic - controlled shutdown inputs and allows the output of each regulator to be turned of independen t ly. the ace 520 includes high accuracy voltage referenc e, error amplifier, current limit circuit and output driver module. the ace 520 has excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. and it uses trimming technique to guarantee output voltage accuracy within 2%. features ? two low dropout voltage regulators ? 300 ma output current for each ldo ? 25ua operating supply current per ldo ? low 4 7uv rms output noise ? standby mode: 0.1ua ? low 160 mv dropout at 3 00ma load ? 73 db psrr at 1 00 hz ? excellent line regulation: 0.05%/v ? independent shutdown controls ? 1.2v to 3.5 v factory - preset output ? output current limit ? highly accurate: 2% ( 1% customized) application ? cellular phones ? cordless phones and radio communication equipment ? battery power ed equipment ? notebook and hand - ole equipment ? wireless lan ? gps receivers absolute maximum ratings p arameter s ymbol m ax u nit input voltage v in 8 v power dissipation sot - 23 - 6 2 5 0 m w j unction temperature t j 125 o c storage temperature t s - 45 to 150 o c ambient temperature t a - 40 to 85 o c not e: exceed these limits to damage to the device. exposure to absolute maximum rating conditions may affect device reliability.
ace 520 dual 300ma high psrr linear regulator ver 1. 4 2 packaging type sot - 23 - 6 6 5 4 1 2 3 ordering information ace 520 x xx x + h sot - 23 - 6(d) sot - 23 - 6(e) description function 6 6 v out1 output 1 pin 2 5 v dd input pin 4 1 v out2 output 2 pin 3 3 ce2 chip enable pin2 5 2 gnd ground pin 1 4 ce1 chip enable pin1 halogen - free output voltage b:1.5v(output1),2.8v(output2) c:1.5v(output1),3.0v(output2) d:1.5v(output1),3.3v(output2) e:1.5v(output1),4.0v(output2) g:1.8v(output1),2.5v(output2) h:1.8v(output1),2.8v(output2) i: 1.8v(output1),3.0v(output2) j:1.8v(output1),3.3v(outpu t2) m:2.8v(output1),1.8v(output2) o:2.8v(output1),2.8v(output2) p:2.8v(output1),3.0v(output2) q:3.0v(output1),2.5v(output2) pb - free dgm : sot - 23 - 6 ( d ) egm : sot - 23 - 6 ( e ) r:3.0v(output1),3.0v(output2) s:3.0v(output1),3.3v(output2) t:3.3v(output1),1.8v(output2) u:3.3v( output1), 3 . 3 v(output2) y : 2.8v( output1), 3 . 3 v(output2) z : 3.3 v(output1), 3.3 v(outp ut2) a :1. 2 v(output1),2. 5 v(output2) b : 2.8 v(output1), 1.2 v(output2) c : 2.8 v(output1), 1 .3v(output2) d : 2.5 v(output1), 2.8 v(output2) e : 2.5 v(output1), 3.3 v(output2) f : 2.8 v(output1), 3.3 v(output2) g : 1.3 v(output1), 2.8 v(output2)
ace 520 dual 300ma high psrr linear regulator ver 1. 4 3 block diagram explanation ace520 series are highly accurate, dual, low noise, cmos low dropout voltage regulators. the output voltage for each re gulator is set independently by trimming. voltages are selectable in 100mv steps within a range of 1.2v to 3.5v. it also can be customized on command. ace520 includes high accuracy voltage reference, error amplifier, current limit circuit and output drive r module. ace520 has excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. and it uses trimming technique to guarantee output voltage accuracy within2%. re commended work conditions item min max unit input voltage range 6 v ambient temperature - 40 85
ace 520 dual 300ma high psrr linear regulator ver 1. 4 4 electrical characteristics (test conditions: c 1 =1uf, c out = 3.3 uf,t a =25 , unless otherwise specified.) ace 520 , for arbitrary output voltage parameter symbol conditions min typ max units input voltage v in 6 v output voltage v out vin=set vout+1v 1ma Q iout Q 30ma vout x0.98 vout1 vout x1.02 v maximum output current i out (max.) vin - vout=1v 300 ma dropout voltage, vout R 2.8 v vdrop iout=100ma 50 80 m v iout=300ma 160 220 line regulation v out / v in ?v out iout=40ma 2.8 v Q vin Q 6 v 0.05 0.2 %/v loa d regulation v out / i out vin=set vout+1v 1ma Q iout Q 300 ma 30 5 0 ma supply current iss vin=set vout+1v 50 100 ua supply current (srandby) istandby vin=set vout+1v vce=gnd 0.1 1.0 ua output voltage temperature coefficiency v out / t?v out iout=30ma 100 ppm/ ripple rejection psrr f=1 00 hz ripple=0.5vp - p vin=set vout+1v 70 db short current limit llim vout=0v 500 ma ce input voltage h vceh 1.5 vin v ce input voltage l vcel 0 0.25 v output noise en bw=10hz~100khz 4 7 uvrms typical ap plication circuit n ote : input capacitor(cin=1uf) and output capacitor (c out =1 uf / 3.3 uf ) are r ecommended in all application circuit.
ace 520 dual 300ma high psrr linear regulator ver 1. 4 5 electrical characteristics psrr freq ( k h z) typical performance characteristics output voltage vs . output current output voltage vs. input voltage (with output short protection) current limit vs. vout line regul a tion iload (ma) vin (v)
ace 520 dual 300ma high psrr linear regulator ver 1. 4 6 dropout voltage v s. output current ripple rejection vs. frequency dropout & iout psrr iout(ma) freq (k h z) line transient respon se cin=cout=1uf iout=25ma vout=3.3v
ace 520 dual 300ma high psrr linear regulator ver 1. 4 7 load transient response cin=cout=1uf vo ut= 4.5v vout=3.3v start up from en shut down from en
ace 520 dual 300ma high psrr linear regulator ver 1. 4 8 packing information sot - 23 - 6
ace 520 dual 300ma high psrr linear regulator ver 1. 4 9 notes ace does not assume any responsibility for use as critical components in life support devices or systems without the express writte n approval of the president and general counsel of ace electronics co., ltd. as sued herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and shoes failur e to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. a critical component is any component of a life support device or system whose failu re to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. ace technology co., ltd. http://www.ace - ele.com/
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